I've got the same stock tank, sunken into the ground with a low retaining wall around it. I'm thinking, next spring, of setting it back up on ground level and building a wider wall around it and then filling the space. I'm always worried about skunks and racoons outdoors. Up off the ground would hold skunks back arnd I'll have to cover it to keep racoons out. Nice tanks, though, aren't they?

Nicely done ninja_turts! I'm considering a 600 gallon stock tank in a couple years, but I'm torn between the ease of a stock tank, or the cheaper cost of a pond liner in some sort of frame. Right now I'm making a temporary kiddie pool pond that should work for a couple of years. I'll post some pictures in the next few days.I'm pretty psyched, as I just got a couple of small YBS by way of a yard sale!